"PL: Let me give you a few research statistics that I thought were profound. Three out of four Americans believe that marriage is designed not for the bearing and raising of children but for personal fulfillment. In other words, each partner is saying, "Your job is to make me happy"—that's the purpose of marriage, and if you're not making me happy then the marriage isn't viable.

That's a seismic shift from the past generation—this idea that you're required to meet my ongoing needs and make me happy. And there's no research to back up the notion that another person could ever make someone happy. "